#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>

int main() {
	char a;
	while (scanf("%c", &a) != EOF)
	{
		if ((a >= 65 && a <= 90) || (a >= 97 && a <= 122))
		{
			printf("%c is an alphabet\n", a);
			getchar();
		}
		else
		{
			printf("%c is not an alphabet\n", a); 
			getchar();
		}
	}

	return 0;
}